Entrance switch



1 Jul 8, 1930.

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attain up Patented July 8, 1930 UNITED STATES Harem;

JOSEPH c. LEWIS. or MINERVA, OHIO. ASSIGNOR T0 orrAnLEs w. xnrmnonn, RE-

CEIVER on THE AMERICAN ELECTRIC sWI roH CORPORATION, or MINERVA,10I-IIO,

A CORPORATION OF DELAWARE ENTRANCE SWITCH Original application filed July 18, 1925, Serial No. 44,609. Divided this application filed May 2, 1927, Serial No. 188,169,.

The blade 15 of the switch is pivotally con- This invention relates to improvements in switches and more particularly to entrance switches such as are used in the service boxes at the entrance of an electric line into a build- The object of the improvement is to improve and simplify the construction of switches of this character and to provlde means whereby the switch may be knocked down to permit the same to be folded entirely within the box for the purpose of shipping; and to provide means whereby the opening and closing movement of the switch blade is limited; and this application is a division of my co-pending application Serial No. 44,609, filed July 18, 1925.

An embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of the improved switch box;

Fig. 2, a plan view of the interior of the box;

Fig. 3, a fragmentary sectional View of the box, showing the switch in open position;

Fig. 4, a similar view showing the switch in closed position;

Fig. 5, a detail perspective view of the link which connects the switch handle to the switch blade;

Fig. 6, a view similar to Figs. 3 and 4 showing the switch folded within the box for shipping; and

Fig. 7 a section on the line 7--7, Fig. 3.

Similar numerals refer to similar parts throughout the drawings.

The box 1 may be formed of sheet metal of a size to accommodate the switch block 2 and one or more fuse blocks 3. Each of these blocks is formed of suitable insulation material connected to the bottom of the box 1 as by the screws 5 or the like.

The line wires (not shown) are arranged to be connected to the binding posts 8 and 9, the binding post 8 being connected, as by a bus bar 10 with the contact jaws 11 of the switch, and the binding post 9 being electrically connected with the bus bar 13 to which the ground connection (not shown) is also connected as by the binding post 14.

nected, as, at 16 to the bracket17 which. is electricallyconnected bya bus bar 18 with the line fuse socket 19, awire 20 connecting said socket with the line side of the meter. Asimilar wire 22 connects the bus bar 13 also with the line side of the meter.

The load side of the meteris connected by a single wire 23 with a binding post 24 upon the fuse block 3, said binding post being .connected as by a bus bar 25 with the circuit fuse sockets 26, a manually operated switch blade 27 being preferably interposed between the binding post and bus bar 25 and operable only from the interior of the box,

. for the purpose of testing.

A plurality of bindin posts 28, corresponding in number to t e number of circuits to be wired from box, are mounted 1n spaced relation upon the bus bar 13, a wire 29 leadin from each of said binding posts 28 to one side ofeach house circuit and a wire 30 leading from each circuit fuse socket 26 to the'other sideof each house circuit.

A bifurcated upright 31 is mounted upon the bottom of the box adjacentto the switch block 2, and the switch handle 32, which is of lnsulation material, is pivoted thereto as by a pin 33. i I

- This handle has the grooved arcuate shoulders 34 upon each side to receive the depending curved flanges 35 formed at the sides of the slot 36in the hinged lid 37 of'the entrance box.

The reduced peripheral portion 36 of the switch handle extends through this slot and is provided with a stem 32 for manually operating the same. The inner side of the handle 32 is recessed as at 38, one end of the S-shaped link 39 being pivotally connected therein as by the pin 40.

The link 39 may be formed of a single sheet of metal bent upon itself as at 41, the opposite end of said link being pivotally connected to the switch blade 15 as by the pin 42, the folded portion 41 of the link forming a stop to limit the opening movement of the switch blade, as shown in Fig. 3, and the inner edge 43 of the handle contacting with the adjacent edge of the link when the blade is in closed position, as shown in Fig. 4, thus relieving the link and switch blade from strain.

As shown in Figs. 3, 4 and 7, the arcuate 5 outer edge portion 36 of the handle entirely closes the slot 36 in the door at all times, thus preventing access to the interior of the box through this slot.

IVhen it is desired to pack the boxes for shipping, in order to economize space, the pivot pin 33 of the switch handle is removed and the handle folded into the position shown in Fig. 6, into the bifurcated bracket 31, and the pin 33 replaced in the aperture provided therefor in the handle.

I claim 1. A switch including a pivoted blade, 8. pivoted operating handle and a link connecting the blade and handle and a stop shoulder on the link located in the line of motion of the blade for limiting the opening movement of the blade.

2. A switch including a pivoted blade, a pivoted operating handle, and a link connecting the blade and handle and stop portions on the link located in the line of motion of the blade and handle for engagement with the blade and handle to limit the closing and opening movements of the blade.

3. A switch including a pivoted blade, a pivoted operating handle, and an S-shaped link connecting the blade and handle and stop portions on the link located in the line of motion of the blade and the handle for engagement with the blade and handle to limit the closing and opening movements of the blade.

4. A switch including a pivoted blade, a pivoted operating handle, and a bifurcated,

folded Sshaped link connecting the blade and handle, the blade being mounted between the legs of the link so that the folded portion of the link forms a stop for engagement with the blade to limit the opening movement of the blade.

In testimony that I claim the above, I have hereunto subscribed my name.

JOSEPH C. LEIVIS. 

